Those are called dumbbell rows, and they're a great exercise. 10lbs is awfully light for that motion, but it is better than nothing.
Hopefully I can upgrade soon. I've had those dumbbells since probably ninth grade! Anyway, thanks for all the info and the link. I've already worked out a list of exercises by body part. Time to put it to work!
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.